閱讀目錄

• 開始
• 簡單使用
• 非同步調用WebServeices
• WebServices驗證
• 相關概念及資源

簡單使用

using System.Collections.Generic;
using System.Web.Services;

namespace 提供WebService服務 {
    /// <summary>
    /// ComplexCalculate 的摘要說明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // 若要允許使用 ASP.NET AJAX 從腳本中調用此 Web 服務，請取消對下行的註釋。
    // [System.Web.Script.Services.ScriptService]
    public class ComplexCalculate : System.Web.Services.WebService {

        [WebMethod]//預設的WebServices服務
        public string HelloWorld() {
            return "Hello World";
        }

        //假設這是京東提供外部應用程式 訪問自己數據的服務
        //根據用戶搜索關鍵字 返回檢索結果
        private readonly Dictionary<string, string> dictionary = new Dictionary<string, string>();
        [WebMethod]//特性表明該方法可供外部訪問
        public string SearchProduct(string searchKey) {
            dictionary.Add("mx2", "聯通MX2 京東");
            dictionary.Add("小米2", "小米四核 京東");//模擬數據
            dictionary.Add("MeiZu", "MeiZu標準本 京東");
            return dictionary[searchKey];
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>

<configuration>
    <system.web>
        <compilation debug="true" targetFramework="4.0" />
    </system.web>

    <system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="ComplexCalculateSoap" />
                <binding name="NeedValidateWsSoap" />
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://localhost:1808/ComplexCalculate.asmx"
                binding="basicHttpBinding" bindingConfiguration="ComplexCalculateSoap"
                contract="SimpleUse.ComplexCalculateSoap" name="ComplexCalculateSoap" />
            <endpoint address="http://localhost:1808/NeedValidateWS.asmx"
                binding="basicHttpBinding" bindingConfiguration="NeedValidateWsSoap"
                contract="AuthenticationPage.NeedValidateWsSoap" name="NeedValidateWsSoap" />
        </client>
    </system.serviceModel>
</configuration>

using System;
using 調用WebServices服務.SimpleUse;

namespace 調用WebServices服務 {
    public partial class SimpleUsePage : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            //同步調用
            using(SimpleUse.ComplexCalculateSoapClient client = new ComplexCalculateSoapClient()) {
                Response.Write(client.SearchProduct("mx2"));
            }
        }
    }
}

非同步調用WebServeices

using System;
using 調用WebServices服務.SimpleUse;

namespace 調用WebServices服務 {
    public partial class UseAsync : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            using(SimpleUse.ComplexCalculateSoapClient client = new ComplexCalculateSoapClient()) {
                client.SearchProductCompleted += client_SearchProductCompleted; //委托 接收非同步響應結果
            }
        }

        void client_SearchProductCompleted(object sender, SearchProductCompletedEventArgs e) {
            Response.Write(e.Result);//輸出非同步返回結果
        }
    }
}

需要註意的是UseAsync.aspx頁面需要添加Async=true;允許接收非同步的配置

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UseAsync.aspx.cs" Async="true" Inherits="調用WebServices服務.UseAsync" %>

using System;
using System.ComponentModel;
using 調用WebServices服務.SimpleUse;

namespace 調用WebServices服務 {
    public partial class AsyncByWorker : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            BackgroundWorker background = new BackgroundWorker();
            //設置需要非同步執行的操作
            background.DoWork += background_DoWork;
            //接收非同步操作結果的"回調函數"
            background.RunWorkerCompleted += background_RunWorkerCompleted;
            //開始真正的執行非同步操作 不要遺漏
            background.RunWorkerAsync();
        }

        void background_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
            Response.Write(e.Result);//從Result中獲取結果
        }

        void background_DoWork(object sender, DoWorkEventArgs e) {
            using(SimpleUse.ComplexCalculateSoapClient client = new ComplexCalculateSoapClient()) {
                e.Result = client.SearchProduct("mx2");//執行結果寫入Result中
            }
        }
    }
}

WebServices驗證

using System.Web.Services.Protocols;

namespace 提供WebService服務 {
    public class MySelfSoapHeader : SoapHeader {
        private string _name;
        private string _pwd;

        public string Name {get {return _name;}set {_name = value;}}

        public string Pwd {get {return _pwd;}set {_pwd = value;}
        }

        private bool ValidaResult(string name, string pwd) {
            if(name == "pizi" && pwd == "yimao") {
                return true;
            }
            return false;
        }

        public bool GetResult() {
            return ValidaResult(_name, _pwd);
        }
    }
}

using System.Web.Services;
using System.Web.Services.Protocols;

namespace 提供WebService服務 {
    /// <summary>
    /// NeedValidateWS 的摘要說明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    public class NeedValidateWs : System.Web.Services.WebService {
        public MySelfSoapHeader MySoapHeader = null;//這裡是通過客戶端實例化的 不要new
        [SoapHeader("MySoapHeader")]
        [WebMethod(Description = "需要驗證的方法")]
        public string IsValid() {
            if(MySoapHeader.GetResult()) {
                return "驗證通過";
            }
            return "未通過驗證";
        }
    }
}

using System;
using 調用WebServices服務.AuthenticationPage;

namespace 調用WebServices服務 {
    public partial class ValidPage : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            using(AuthenticationPage.NeedValidateWsSoapClient client = new NeedValidateWsSoapClient()) {
                MySelfSoapHeader header = new MySelfSoapHeader();
                header.Name = "pizi";
                header.Pwd = "yimao";//驗證通過
                //header.Pwd = "sanmao";//未通過驗證
                Response.Write(client.IsValid(header));
            }
        }
    }
}

相關概念及資源

解決了三個問題：1.介面的自我描述;2.採用Http協議等常規協議,不用寫原始的Socket;3.基於Web伺服器,不占用80埠之外的埠.